| Native Name: | |
| Conventional Long Name: | Dong'ou |
| Common Name: | Dong'ou |
| Status: | Kingdom |
| Government Type: | Monarchy |
| Year Start: | 191 BC |
| P1: | State of Yue |
| S1: | Han dynasty |
| Event1: | Defeated by Minyue |
| Date Event1: | 138 BC |
| Event2: | Annexed by the Han dynasty |
| Date Event2: | 111 BC |
| Image Map Caption: | Map of Dong'ou |
| Image Map2: | Han Expansion.png |
| Map Caption2: | The location of Dong'ou kingdom before the conquest of the Han dynasty |
| Capital: | Dong'ou (modern Wenzhou) |
| Leader1: | Yao (搖) |
| Leader2: | Zhenfu (貞復) |
| Leader3: | Wang (望) |
| Year Leader1: | 191–185 BCE |
| Year Leader2: | 185–138 BCE |
| Year Leader3: | 138–138 BCE |
| Title Leader: | King |
| Today: | China |
Dong'ou also known as Ouyue, was an ancient kingdom in modern Wenzhou and Taizhou, Zhejiang Province, China. The realm of Dong'ou was given to Zou Yao by Emperor Gaozu of Han in 192 BC. During the Han campaigns against Minyue in 138 BC, the king of Dong'ou no longer wished to live in his realm after the incident, having submitted himself in an prostrating gesture, which was indicative of his final acquiescence as a mere supplicant to have him and his people's eventual fates to be absorbed into the Han empire. After Zou Yushan's unsuccessful uprising against General Yang Pu's conspiratorial intentions to subvert him, which aimed to protect Dongyue's independence, the aspiration for autonomous control over Dongyue gradually dissipated during the final months of 111 BC. Zou's uprising was suppressed, prompting the Han dynasty to eventually incorporate Dongyue and the remaining territories of the former Minyue, thereby permanently securing the complete annexation and assimilation of both domains into the Han empire.